FNUS73 KDMX 201249 FWSDMX SPOT FORECAST FOR SFN PILE...IOWA DNR NATIONAL WEATHER SERVICE DES MOINES IA 749 AM CDT THU JUN 20 2013 FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON JUNE 20. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. AN INITIAL OBSERVATION AT IGNITION AND A MID BURN OBSERVATION ARE REQUIRED... PLEASE RELAY THEM TO THE NATIONAL WEATHER SERVICE FOR EACH PRESCRIBED BURN. .DISCUSSION... WINDS WILL INCREASE OUT OF THE SOUTH SOUTHEAST TODAY...REACHING SPEEDS OF 15 TO 20 KNOTS BY THE AFTERNOON. RELATIVE HUMIDITY WILL FALL THROUGH THE MORNING...BOTTOMING OUT IN THE 50S LATE IN THE DAY. THUNDERSTORMS WILL ALSO BE POSSIBLE AT TIMES...ESPECIALLY IN THE LATE AFTERNOON AND EVENING. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT). SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. TEMPERATURE.........75 AT IGNITION...MAX 85. RH..................74 PERCENT AT IGNITION...MIN 57 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 9 TO 17 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1700 FT AGL INCREASING TO 5900 FT AGL. MIXING WINDS........SOUTHEAST 10 TO 16 MPH SHIFTING TO THE SOUTH 20 TO 25 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....POOR TO FAIR (2300-14600 KNOT-FT) INCREASING TO EXCELLENT TO EXCELLENT (101500-117200 KNOT-FT). WIND (20 FT)........WINDS SOUTH AT 14 MPH AT IGNITION...OTHERWISE SOUTH WINDS 9 TO 17 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........54 57 57 54 57 57 57 56 58 WEATHER COV..... SCH CHC CHC CHC CHC CHC WEATHER TYPE.... RW RW RW RW RW RW TSTM COV........ SCH CHC CHC CHC CHC CHC TEMP............75 79 81 82 83 84 85 85 84 RH..............74 64 63 61 59 59 57 57 61 20 FT WIND DIR..S S S S S S S S S 20 FT WIND SPD..14 15 16 16 17 17 17 16 15 20 FT WIND GUST.20 20 20 25 25 25 25 25 20 EYE LVL WND DIR.S S S S S S S S S EYE LVL WND SPD.10 11 11 11 12 12 12 11 11 EYE LVL WND GST.20 20 20 25 25 25 25 25 20 MIX HGT (KFT)...1.7 2.8 3.9 5.0 5.3 5.6 5.9 5.3 4.7 MIXNG WIND DIR..SE S S S S S S S S MIXNG WIND SPD..16 20 23 25 25 24 23 24 25 HAINES INDEX....3 3 4 4 4 3 3 3 4 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT). CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING...THEN SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING. CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. TEMPERATURE.........MIN 69. RH..................MAX 93 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 9 TO 14 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4100 FT AGL DECREASING TO 1800 FT AGL EARLY IN THE EVENING. MIXING WINDS........SOUTH 20 TO 24 MPH DECREASING TO 8 TO 14 MPH EARLY IN THE EVENING. SMOKE DISPERSAL.....FAIR TO EXCELLENT (21400-86400 KNOT-FT) DECREASING TO POOR TO POOR (2000-4800 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. WIND (20 FT)........SOUTH WINDS 9 TO 14 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........64 64 65 65 67 69 WEATHER COV.....CHANCE S CHC S CHC CHANCE CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TSTM COV........CHANCE S CHC S CHC CHANCE CHANCE CHANCE TEMP............83 78 74 72 71 70 RH..............63 71 82 84 87 90 20 FT WIND......S 14 S 13 S 12 S 10 S 9 S 9 20 FT WIND GUST.20 15 15 15 10 10 EYE LEVEL WIND..S 10 S 9 S 9 S 7 S 6 S 6 EYE LVL WND GST.20 15 15 15 10 10 MIX HGT (FT)....4100 1800 500 300 300 300 MIXNG WIND......S 24 S 14 S 8 S 9 S 12 S 13 HAINES INDEX....4 4 4 4 4 4 .FRIDAY... SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). CHANCE OF SHOWERS AND THUNDERSTORMS EARLY IN THE MORNING. TEMPERATURE.........MAX 89. RH..................MIN 57 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 9 TO 14 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2100 FT AGL INCREASING TO 3800 FT AGL LATE IN THE MORNING...THEN INCREASING TO 5800 FT AGL EARLY IN THE AFTERNOON DECREASING TO 3100 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........SOUTH 13 TO 22 MPH INCREASING TO 20 TO 29 MPH IN THE AFTERNOON. SMOKE DISPERSAL.....POOR TO GOOD (2800-45400 KNOT-FT) INCREASING TO GOOD TO EXCELLENT (51000-145600 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........SOUTH WINDS 9 TO 14 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE MORNING. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........71 61 51 51 WEATHER COV.....CHANCE S CHC WEATHER TYPE....RNSHWR RNSHWR NONE NONE TSTM COV........CHANCE S CHC TEMP............70 79 86 88 RH..............90 74 63 59 20 FT WIND......S 9G10 S 12G15 S 14G20 S 13G15 EYE LEVEL WIND..S 6G10 S 9G15 S 10G20 S 9G15 MIX HGT (FT)....300 1700 2700 5800 MIXNG WIND......S 13 S 22 S 22 S 29 HAINES INDEX....4 5 4 3 $$ FORECASTER...LEE REQUESTED BY...RYAN TYPE OF REQUEST...PRESCRIBED .TAG 20130620.SFNPI.01/DMX